1989 Ski-Doo Repair Manual, Page 372Get this manual
Section 04 ELECTRICAL Sous-section 02 (IGNITION TIMING)
- Rotate flywheel clockwise unlil pistoll is at lOP dead center- Unlock outer ring of diai and turn it until0" (zerol on dial aligns with pointer- LDck outer ring in position4 From this poinl, rotate flywheel back 14 turn then roo tale it clockwise to reach the specified position :
503 engine type: look through the fan and check if the flywheel and the crankcase marks align
DIRECT TIMING ENGINE TYPE
(ADVANCE) mm linl
1.88 1.074)
If marks do not align, scribe new one onlo fly'Vheel fac-
503 Safari Cheyenne Safari Escapadel Voyageur 503 Alpine II r -536 - 583
ing center mark on crankcase (except on 503 type which has an arrow on crankcase)This new mark becomes Ihe reference when using stroboscopic timing light